Secateur or pruning shear and the like



July 24, 1951 G. F. LAWRENCE SECATEUR OR PRUNING SHEAR AND THE LIKE 4 Sheets-Sheet 2 Filed Jan. 27, 1948 m0/ence e 15 NL) ATTONE Y ATTORNEY m g MINVENTOR Eem eFlLa-Wrence,

BY "v W 4 Sheets-Sheet 3 G F LAWRENCE SECATEUR OR PRUNING ySHEAR AND THE LIKE July 24, 1951 Filed Jan. 27

July 24,4 1951 G. F. LAWRENCE 2,561,803

SECATEUR OR PRUNING SHEAR AND THE LIKE Filed Jan. 27, 1948 4 Sheets-Sheet 4 .out .of operation.

Patented July 24, 1951 SECTEUR 0R PRUNING SHEAR AND THE LIKE George Frederick Lawrence, London, England Application January 27, 1948, Serial No. 4,47 6 In Great Britain February 24, 1947 8 Claims.

Y lThis invention` relates to improvements in secateurs, pruningshears and the like, more parl ticularly of the ydraw .out type. The object of this invention is Vto provide im- `provedmeans forgiving motion toa sliding blade mounted .in one of the arms of a secateur or `pruning shear. i

A furtherobject is to provide a secateur or `shear of improved construction which will be more efticientin use `and capable of ready adjustment. l

A` still `further Aobject iste provide improved `means for locking the secateur when closed and Ni'ith` these and other objects `in view, the invention consists in providing a secateur, pruning shear or the like of the draw cut type comprising a pairof pivotally connected arm` members, .one formed or provided with a fixed blade and the other arm member having a guideway adapted for the reciprocation of a sliding blade and a' 1Vrocking leverA member pivoted on the latter arm at a point beyond one side of the sliding blade member, the free end of the lever beineT coupled l to the blade, by `apinor projection sliding in a groove orslot in the said lever, said lever having a .bell crank extensionA coupled to the arm `carry- Vjing' the iiic'ed blade, thearrangement being such that the opening and closing of the arms rocks the lever and gives Va sliding movement to the blade.

grip on the arm is released the lever and sliding Fig. 5 isa view of a blank from which onegof `the .arms is formed;

rig. 6 is a front eievaticncf the blank tenute shape;

Fig. 'lis a side View thereof; Fig. 8 is a plan;

Fig. 9 is a front elevation ofthe `other arm the secateur in closed position;

- their fully open position and blade are'forced to a position theyA take when thev arms are in open position, so that full automatic opening movement is effected.

The invention still further` consists in providing adjacent to the pivotal connection of the arms,

a swingingcatch on one arm to engage in a notch or hook recess on the other arm whereby the arms may be held in their closed position when required, means being provided to retain detachably the catch in its unlocking position. 'The invention will now be described With reference tothe accompanyingfdrawings in which:

`Fig. `1 is a'front elevation ofone form of secateur constructed accordingto this invention, the secateur being in closed position; l

Fig. 2 is a side view thereof; 3' is a `similar Vievv to Fig. 1 showing the :secateurin its `fully open position; l. Fia. .ii is an enlarged sectional plan :taken on Fig. 12 is e, .Similar View showing the partsin Figs. 1,3, 11i and 15 are sectionaldetails showln `alternative means for guiding the sliding blade in one of the arms of the secateur.`

As shown `the improved secateur comprises two @arms I and 2 pivotally connected together at 3,

one arm l being formed or provided with a nxed blade it, and the other with a guideway 5 in which a co-operating blade 't is adapted to reciprocate.

These arms `I and 2 are conveniently formed of` sheet metal pressed to `channel-like shape. Fig.`5 shows a blankffor the arm 2. This blank is pressed to channel-like shape so as to provide ,a handle portion 1 of U shape and a pair of flat spaced faces 8 and a connecting portion 9 asshovvn more particularly 'in Figs. 6 to 8. This blank` when shaped is also formed with `the guideway 5 for the "blade 5. This guideway 5 is formed by bending up one edge Iii of one'of the fiat faces 8 and by bending up parallel guide surface or projection Il which is formed integrally by' cuts l2 in one face vof the arm 2. The arm Il is also formed byV pressing a suitably shaped blank to `channel shape sogas to provide a handlelportion |3 of U-s'hape and a pair of spaced flat faces `Hl as shown more particularly in Fig. `9. To one of these ilat faces |14 is secured the xed blade 4. The flat faces 8` and `it of the' arms l `and 2`are apertured atl5 for'the reception of the pivotal connection and are interleaved With each other.

These faces 8 and I@ `also `provide a housingtor the lower endof the reciprocating blade E and `its :operating mechanism in the form of a Arocking lever I6. Thisrocking lever lli is `pivoted at Hy on the arm 2, formed with theguidewa-y 5 at a `the blade Bbackwards `and forwards uin the `guide-- way-.5.. The lever lis also formedwith a slotted OFFICE a point beyond one side of the sliding blade, a. pin and slot connection between the other end of said lever and said sliding blade, and a bell crank extension on said lever and coupled to the fixed blade arm, whereby the opening and closing of the arms rocks the lever and reciprocally slides the sliding blade relative to the fixed blade as said blades are moved toward and from each other.

8. A secateur, pruning shear or the like as defined in claim 7, wherein said blades are in sideby-side engagement, the flat faces of the arms are interleaved with each other and enclose said blades between the `inner flat faces, said flat faces having pivot receiving apertures, and a pivot forming bolt extending through said apertures with a nut on said bolt to retain said arms in pivotal assembly, the apertures in the inner of said flat faces being of a size to receive the shank of said bolt and the apertures in the outer of said flat faces being of a size to freely receive the bolt head and nut respectively with said head and nut respectively bearing on said inner flat faces to maintain selective frictional pressure between said blades.

GEORGE FREDERICK LAWRENCE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 374,358 Hamann Dec. 6, 1887 838,504 Hammond Dec. 11, 1906 1,159,360 Clauss Nov.. 9, 1915 1,453,603 Redman May 1, 1923 1,700,306 Bernard Jan. 127, 1929 2,083,483 Strezoff June 8, 1937 2,184,986 Vosbikian et a1 ,Dec. 26, 1939 2,310,959 James Feb. 16, 1943 2,436,260 Klenk Feb. 1'7, 1948 2,495,677 Boyer Jan. :24, 1950 

